release/instruments/instruments.ino

   1 const int NUMBER_OF_MARACAS = 2;
   2 const int MARACAS_PINS[] = {6, 7};
   3 const int MARACAS_DELAY = 5000;
   4
   5 const int NUMBER_OF_DRUMS= 4;
   6 const int DRUM_PINS[] = {8, 9, 10, 11};
   7 const int DRUM_DELAY = 2500;
   8
   9 const int GUITAR_THRESHOLD = 20;
  10 const int GUITAR_PIN = A0;
  11 const int GUITAR_DELAY = 5000;
  12
  13 int maracas_states[] = {-1,-1};
  14 int maracas_delays[] = {0, 0};
  15
  16 int drum_delays[] = {0, 0, 0, 0};
  17
  18 int guitar_delay = 0;
  19
  20 void setup() {
  21   for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
  22     pinMode(MARACAS_PINS[i], INPUT);
  23   }
  24   for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
  25     pinMode(DRUM_PINS[i], INPUT);
  26   }
  27   Serial.begin(9600);
  28 }
  29
  30 void loop() {
  31   maracas();
  32   drums();
  33   guitar();
  34   update_delays();
  35 }
  36
  37
  38 void maracas() {
  39   for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
  40     int newState = digitalRead(MARACAS_PINS[i]);
  41     if (newState != maracas_states[i] && maracas_delays[i] < 1) {
  42       Serial.print("maracas,");
  43       Serial.print(i);
  44       Serial.println();
  45       maracas_states[i] = newState;
  46       maracas_delays[i] = MARACAS_DELAY;
  47     }
  48   }
  49 }
  50
  51 void drums() {
  52   for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
  53     if (digitalRead(DRUM_PINS[i]) == HIGH && drum_delays[i] < 1) {
  54       Serial.print("drum,");
  55       Serial.print(i);
  56       Serial.println();
  57       drum_delays[i] = DRUM_DELAY;
  58     }
  59   }
  60 }
  61
  62 void guitar() {
  63   int pitch = analogRead(GUITAR_PIN);
  64   if (pitch >= GUITAR_THRESHOLD && guitar_delay < 1) {
  65     Serial.print("guitar,");
  66     Serial.print(pitch);
  67     Serial.println();
  68     guitar_delay = GUITAR_DELAY;
  69   }
  70 }
  71
  72 void update_delays() {
  73   for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
  74     if (maracas_delays[i] > 0) {
  75       maracas_delays[i] -= 1;
  76     }
  77   }
  78   for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
  79     if (drum_delays[i] > 0) {
  80       drum_delays[i] -= 1;
  81     }
  82   }
  83   if (guitar_delay > 0) {
  84     guitar_delay -= 1;
  85   }
  86 }